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PIV measurements of the near-wake behind a sinusoidal cylinder

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Abstract

The three-dimensional near-wake structures behind a sinusoidal cylinder have been investigated using a particle image velocimetry (PIV) measurement technique at Re=3,000. The mean velocity fields and spatial distributions of ensemble-averaged turbulence statistics for flows around the sinusoidal and corresponding smooth cylinders were compared. The near-wake behind the sinusoidal cylinder exhibited pronounced spanwise periodic variations in the flow structure. Well-organized streamwise vortices with alternating positive and negative vorticity were observed along the span of the sinusoidal cylinder. They suppress the formation of the large-scale spanwise vortices and decrease the overall turbulent kinetic energy in the near-wake of the sinusoidal cylinder. The sinusoidal surface geometry significantly modifies the near-wake structure and strongly controls the three-dimensional vortices formed in the near-wake.

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References

  • Ahmed A, Bays-Muchmore B (1992) Transverse flow over a wavy cylinder. Phys Fluids A 4:1959–1967

    Article  CAS  Google Scholar 

  • Ahmed A, Khan MJ, Bays-Muchmore B (1993) Experimental investigation of a three-dimensional bluff body wake. AIAA J 31(3):559–563

    Google Scholar 

  • Bearman PW, Owen JC (1998) Reduction of bluff-body drag and suppression of vortex shedding by the introduction of wavy separation lines. J Fluids Struct 12:123–130

    Article  Google Scholar 

  • Brede M, Eckelmann H, Rockwell D (1996) On secondary vortices in the cylinder wake. Phys Fluids 8:2117–2124

    Article  CAS  Google Scholar 

  • Lam K, Wang FH, Jiang GD, So RMC (2003) Mean and fluctuating velocity fields in the near wake of a wavy cylinder. Proceedings of the seventh international symposium on fluid control, measurement and visualization, Sorrento, Italy, pp 25–33

  • Lam K, Wang FH, Jiang GD, So RMC (2004) Three-dimensional nature of vortices in the near wake of a wavy cylinder. J Fluids Struct 19:815–833

    Article  Google Scholar 

  • Lin JC, Vorobieff P, Rockwell D (1995) Three-dimensional patterns of streamwise vorticity in the turbulent near-wake of a cylinder. J Fluids Struct 9:231–234

    Article  Google Scholar 

  • Nguyen AT (2004) Experimental investigation on wake behind a sinusoidal cylinder. Master Thesis, Department of Mechanical Engineering, POSTECH, Korea

  • Owen JC, Bearman PW, Szewczyk AA (2001) Passive control of VIV with drag reduction. J Fluids Struct 15:597–605

    Article  Google Scholar 

  • Wang FH, Jiang GD, Lam K (2004) A study of velocity fields in the near wake of a wavy (varicose) cylinder by LDA. Flow Meas Instrum 15(2):105–110

    Article  Google Scholar 

  • Williamson CHK (1996) Vortex dynamics in the cylinder wake. Annu Rev Fluid Mech 28:477–539

    Article  Google Scholar 

  • Wu J, Sheridan J, Soria J, Welsh MC (1994) An experimental investigation of streamwise vortices in the wake of a bluff body. J Fluids Struct 8:621–625

    Google Scholar 

  • Wu J, Sheridan J, Welsh MC (1996) Velocity perturbations induced by the longitudinal vortices in a cylinder wake. J Fluids Eng 118:531–536

    CAS  Google Scholar 

Download references

Acknowledgements

This work was supported by the NRL (National Research Laboratory) program of the Ministry of Science and Technology, Korea.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 319-1188, Kyong-buk, Korea

    Wei Zhang & Sang Joon Lee

  2. Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai, 200072, China

    Daichin

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  1. Wei Zhang
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  2. Daichin
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  3. Sang Joon Lee
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Correspondence to Sang Joon Lee.

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Zhang, W., Daichin, . & Lee, S.J. PIV measurements of the near-wake behind a sinusoidal cylinder. Exp Fluids 38, 824–832 (2005). https://doi.org/10.1007/s00348-005-0981-9

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  • DOI: https://doi.org/10.1007/s00348-005-0981-9

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